Rotary engine.



Patented June 18, 1912.

2 SHEETS-SHEET 1.

C. GILSBAUH.

ROTARY ENGINE. APRLIOATION FILED JUNE 26, 1911.

1,029,62 7 Patented June 18, 1912.

2-SHEETS-SHEET'2.

IIIIP jroeaeta nnrrnn stares PATENT @ltl l il GLEli/IENS GILSBACH,or'BbnzErE R-HAMMER, NEAR G-nnvnnnnnon, onnraanr;

ROTARY ENGINE.

Specification of Letters Patent.

- 1 Application filed June 26, 1911. Serial No. 635,4:55.

of which the following is a specification.

The present invention relates to improvements in rotary engines of thekind fitted with two pistons of which one is rigidly connected to therotating body of the engine and the other adjustable on the peripherythereof the latter piston being adjusted relative tov the former, duringthe movement of both, so as to form an abutment for" transmitting thepower of the expanding motive fluid to the rotating; body, so as toexpel the spent thud, so as to admit lrcsh l'luid and, in the case ofgas engines, so as 20' to etlect a compression ot the gas mixture beforethe ignition thereot..

The 1nrent1on consists in the various details oi? construction andcombination of parts ashereinafter described and claimed,

increased etliciency of the engine and complete utilization of .themotive power being aimed at.

In the accompanying drawings the invention is illustrated Figure 1representing a central section of the improved rotary engine, and Fig.2, a central sectional elevation and partial view 'of the same, withmodifications. Fig. 3 is section along the shaft of the maehine. i

The rotary engine consists of a ring; shaped body part 7) rotating inthe direction of the arrow and rigidly connected to the machine shaft bymeans of arms and a hub d. Said body 6 reaches into theicenter of thewriting chamber 6 and is snugly fitted to the machine frame whichconsists of the rigid parts f and (a y The letter it indicates theborder line hei tween the rotating and the rigid parts of inventionwill. be described only in con nection with each engine.

With therotating body Z) a piston Isis rigidly connected which is packedwithin the chamber 0 in the usual manner. in. said chamber a seen dpiston of similar appearaizee is prove: d whieh' is loosely arrangedtherein and provided with a 3our nal bearing l to which an arm in isturnaliily connected, a spring n tenoltni to force the latter againstthe periphta'y ot' the rigid.

frame part g.- Said arm 221. may he provided 'with a roller at itsextreme endso as'to reduce the friction on the periphery wall. To theournal hearing I is furthermore connected a rod 0 which \fltl) its otherend 15 jointed to a lever The latter is mounted on a shaft Q Which hasits hearings in brackets 7' 1)1'O'l( iBtl i)ll the rotating body T hebody Z ist provided. with a recess through which the lever p can enterthe chamber (2. This recess has no detrimental. etteet, since only thespace a between the pistons In and needed. for the actual working. Thelever 71 and the elements con: neeted thereto are checked in onedirection by an elastic abutment i which is also provided on the bodyI). At botlt'"sides of the 1naehine r-fra1ne rigid cam faces 1', 2, 3,and t are provided for the rollers '11 mounted on the free ends oflevers w, the latter being rigidly connected to opposite ends-of theshaft f]. :r is the inlet-port, and 2' the exhaust-port. The ignition ofthe n1i.\'- titre takes place at 1 Somewhat to the rear of theigiiitirigt osit'ion recesses a are to form abutments for the tree endof the arm m Tlhemm/Zus operand i is as follows: in the position shownin full in Fig. l, the gas mix ture is just being admitted into thespace 8 between the pistons is and 1 rotates, as already-noticed, in thedirection of the arrow and carri with it the piston i and the shaft 9 aswell as the levers con nected to these elements. As the cleme ts moveaway from the po' on indicated, the roller o will soon rpn up agaii'istthe camface' 1 and be deflected by the latter so as to turnthe lever inand with it the shaft 4; and the lever 77. p is transmitted by the rod 0to the piston i which is tl'iereby caused to approacl the piston so asto diminish the space a and com press the gas-mixture inclosed in thelatter. In the position shown dotted in l, the

roller n has reached the summit of the ltatentetl tltnne t a. ttllffl;

The body b- The movement of the lever I totfit t compression. At thismoment the igniting position g has also been reaehedby the space a sothat an ignition of the gas-mixture takes place. Thesudden' increase inthe gas volume following upon such ignitioncauses the pistons to-beforced apart. Return-movementof the piston c is prevented by the arm atwhich is retained in one of the recesses 11-, and the whole impellingpower of the expanding gases will therefore be applied to the piston kso as to urgeit forward togethcr with the body I), the piston 1' remaining stationary while the roller 1) travels down along the cam-face 4.\Vhen the roller v reaches the cam-face 2 another approach of thepistons is effected this causing the spent gases to be expelled from thespace throughthe exhaust port 2. Having passed the summit of thecam-face 2', the roller '1: is guided between the cam-faces 3 and 8 soas to effect a forcible separation of the, piston and create a vacuumbetween them which, upon. their arrival at the inletport :0, ca uses afresh supply of gas mixture to enter the space 8.

It is obvious that the arrangement may be doubled in which case the body5 will be properly balanced and one-sided action of the centrifugalforce prevented.

It is also obvious thatthe arm m and the recesses u may be dispensedwith since the piston i could be supported by means of the rod 0 and thelevers p and'w against the cam-'face 4. In this case it may beadvisable, in order to relieve the shock of the cXplo sion, to adapt thecam-face 4. to yield. Such an arraigement is indicated-by dotted linesin Figi] and shown more clearly in Fig. 2 where the outer part 5 of thecam element is adapted to turn in one direction about a' pivot i. Astrong spring 6 tends to hold the part 5 in its normal position andproduces the desired resiliency of the cam-face at.

If the arrangement is tohbe applied to steam engines, the cam-faces areadapted to bring the pistons in close proximity at the inlet-port and toretain the piston 2' in this position to utilize the expansion of thesteam.

In the construction shown in Fig. I the part a may be extended to form acomplete can'i-groove together witnthe cam-faces 1, 2, Zand 4.

1. in a rotary engine of the character described, the combination with arotatable body carrying one rigid and one adjustable piston, of astationary ,frame forming, to-

rollers so to control the position of the adjustable piston relative tothe rigid one during the movement of the rotatable body,

the adjustable piston is retracted from the rigid one forthe admissionof the motive fluid, then approached thereto for the compression of suchfluid, then held stationary for transmitting the energy of the expandingfluid to the'rotating bodygand finally reapproached thereto for theexpulsion of the spent fluid, substantially as set forth.

:2. In a rotary engine of the character described, the combination witha rotatable body carrying one rigid and one adjustable piston, of astationary frame forming, together with the body, a ring-shaped Workingspace for said pistons, a shaft rotatably held by said body, alever.connectcd to said shaft so as to project, through a-slot in thebody, into the working space, a rod pivoted to the free end of the leverand to the adjustable piston, levers connected to the ends of saidshaft,- rollers on the ends of the latter levers, and cam elements forguiding said rollers so as-to control the position of the adjustablepiston relative to the rigid one during the movement of the rotatablebody, the cam elements being so constructed that the adjustable pistonis retracted from the rigid one for admitting the motive fluid betweenthem, then approached thereto for the compression of such fluid, thenheld stationary for transmitting the energy of-theexpanding fluid to therotating body, and finally real'iproached thereto for the expulsion ofthe spent fluid, the cam element whichcontrols the adjustable piston atthe commencement of the expansion beinghinged and spring-actuated so asto relieve the shoclc of such expansion, substantially as set forth.

. LEMENS GILSBACH. [n s] Witnesesi CHAS. J \Vnrsirr,

ALF ED HnNKnL.

the cam elements being so constructed that

